[INFO] cloning repository https://github.com/bczhc/rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bczhc/rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbczhc%2Frust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbczhc%2Frust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1d62a0006c5ca0026e229547b5339a72fa82faf5
[INFO] testing bczhc/rust against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbczhc%2Frust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bczhc/rust on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bczhc/rust
[INFO] finished tweaking git repo https://github.com/bczhc/rust
[INFO] tweaked toml for git repo https://github.com/bczhc/rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/bczhc/rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fb8ab4059be1177751f31da5e82cc86c267b59c8ea6d002952b6d22d63af0ec
[INFO] running `Command { std: "docker" "start" "-a" "0fb8ab4059be1177751f31da5e82cc86c267b59c8ea6d002952b6d22d63af0ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fb8ab4059be1177751f31da5e82cc86c267b59c8ea6d002952b6d22d63af0ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fb8ab4059be1177751f31da5e82cc86c267b59c8ea6d002952b6d22d63af0ec", kill_on_drop: false }`
[INFO] [stdout] 0fb8ab4059be1177751f31da5e82cc86c267b59c8ea6d002952b6d22d63af0ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb07de36a0b3b7007bc42d1b2b4d2c161e5100226d50fcdd8ba45e44b78e34e4
[INFO] running `Command { std: "docker" "start" "-a" "cb07de36a0b3b7007bc42d1b2b4d2c161e5100226d50fcdd8ba45e44b78e34e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling errno v0.2.7
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling lib v1.0.0 (/opt/rustwide/workdir/lib)
[INFO] [stderr]    Compiling rust v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/fourier_series_demo.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     return;
[INFO] [stdout]    |     ------ any code following this expression is unreachable
[INFO] [stdout] 19 |     let mut input = Vec::new();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.90s
[INFO] running `Command { std: "docker" "inspect" "cb07de36a0b3b7007bc42d1b2b4d2c161e5100226d50fcdd8ba45e44b78e34e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb07de36a0b3b7007bc42d1b2b4d2c161e5100226d50fcdd8ba45e44b78e34e4", kill_on_drop: false }`
[INFO] [stdout] cb07de36a0b3b7007bc42d1b2b4d2c161e5100226d50fcdd8ba45e44b78e34e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae9fddeb407e54f392207937657a4fe952a147e41b710cf1f4694b684b4934a6
[INFO] running `Command { std: "docker" "start" "-a" "ae9fddeb407e54f392207937657a4fe952a147e41b710cf1f4694b684b4934a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/fourier_series_demo.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     return;
[INFO] [stdout]    |     ------ any code following this expression is unreachable
[INFO] [stdout] 19 |     let mut input = Vec::new();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "ae9fddeb407e54f392207937657a4fe952a147e41b710cf1f4694b684b4934a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae9fddeb407e54f392207937657a4fe952a147e41b710cf1f4694b684b4934a6", kill_on_drop: false }`
[INFO] [stdout] ae9fddeb407e54f392207937657a4fe952a147e41b710cf1f4694b684b4934a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f8cfc486bf90daa7504f0c270f7d3f92580543d81dbbf282126f0462353f7cd7
[INFO] running `Command { std: "docker" "start" "-a" "f8cfc486bf90daa7504f0c270f7d3f92580543d81dbbf282126f0462353f7cd7", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/fourier_series_demo.rs:19:5
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 18 |     return;
[INFO] [stdout] 
[INFO] [stderr]    |     ------ any code following this expression is unreachable
[INFO] [stdout] 
[INFO] [stderr] 19 |     let mut input = Vec::new();
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/demo-d629b529dc189a74)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fourier_series_demo-b99d05d24697069d)
[INFO] running `Command { std: "docker" "inspect" "f8cfc486bf90daa7504f0c270f7d3f92580543d81dbbf282126f0462353f7cd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8cfc486bf90daa7504f0c270f7d3f92580543d81dbbf282126f0462353f7cd7", kill_on_drop: false }`
[INFO] [stdout] f8cfc486bf90daa7504f0c270f7d3f92580543d81dbbf282126f0462353f7cd7